Method and apparatus for shielding wire for MRI resistant electrode systems
First Claim
1. A medical electrical lead, comprising:
- an electrode an electrode conductor coupled to the electrode; and
a shield conductor adjacent to at least a portion of the electrode conductor, the shield conductor being electrically isolated from the electrode conductor and adapted to at least partially electrically shield the electrode wire.
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Accused Products
Abstract
The present invention discloses apparatus and methods for use with implantable medical system. In one embodiment a medical electrical lead is disclosed comprising an electrode wire and a shield wire adjacent to at least a portion of the electrode wire, the electrical lead is capable of insertion within a body and the shield wire is electrically separated from the electrode wire. In another embodiment of the invention a method of shielding a medical electrical lead is disclosed. The method comprises receiving electromagnetic energy within a shield wire that is adjacent at least a portion of the lead. The energy is dissipated into a living body, thus reducing the amount of electromagnetic energy received by the medical electrical lead.
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Citations
22 Claims
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1. A medical electrical lead, comprising:
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an electrode an electrode conductor coupled to the electrode; and
a shield conductor adjacent to at least a portion of the electrode conductor, the shield conductor being electrically isolated from the electrode conductor and adapted to at least partially electrically shield the electrode wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus, comprising:
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an implantable medical device;
an electrical lead electrically coupled to the implantable medical device; and
a shield wire disposed within the lead, the shield wire adapted to at least partially electrically shield the electrical lead. - View Dependent Claims (11, 12, 13, 14)
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15. A method of shielding a medical electrical lead, comprising:
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receiving electromagnetic energy within a shield wire carried by the lead; and
dissipating the energy into a patients body via at least one conductive surface electrically coupled to the shield wire.
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16. A method of shielding a medical electrical lead from radio-frequency energy, comprising:
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providing an electrical lead comprising at least one electrode wire and at least one shield wire; and
electrically coupling the at least one shield wire to a living body. - View Dependent Claims (17)
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18. A method of shielding a patient from the effects of electromagnetic waves on a medical electrical lead, comprising:
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providing a lead having at least one electrode wire surrounded by a layer of insulative material;
providing a shield wire adjacent to, and electrically insulated from, the at least one electrode wire;
inserting the medical electrical lead within the body of the patient;
receiving electromagnetic waves with the shield wire; and
dissipating the energy received by the shield wire into the body to reduce current induced within the at least one electrode wire.
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19. A method of manufacturing a shielded medical lead, comprising:
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providing a lead having at least one electrode wire and at least one shield wire, wherein the at least one shield wire is adapted to receive electromagnetic waves; and
providing insulative material to carry the at least one electrode wire and the at least one shield wire such that the shield wire is not in direct electrical communication with the electrode wire. - View Dependent Claims (20, 21, 22)
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Specification